[ZendTo] Always 100% Remaining

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Hello, 

Testing a new installation on CentOS 5.5 and all is working well apart from the upload remaining percentage. Our environment is: 

Client -> Internet -> NGINX -> Internal ZendTo Server 

all happens across SSL. What I am seeing is that what ever the size of the file it always says 100% remaining. Any ideas on how to fix this please ? 
-- 
Thanks, Phil 

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